Mixing and vaporizing device



Oct. 23, 1928.

H. M. CIOGANl` MIXING AND VAPORIZING DEVICE Filed Aug. 18, 1925 Patentedoct. 23, 192s.'

UNITED STATES HENRY M. COGAN,

OF CHARLESTON', WEST VIRGINIA.

MIXING AND VAPORIZING DEVICE.

Application filed August 18, 1925. Seria] No. 50,917.

This invention relates to a mixing and vaporizing device for motor fuelsespecially adapted for use between a carburetor and intake manifold fuelsupply pipes of an internal combustion engine. An object of thisinvention is to effect a complete mixing and Vaporization of the enginefuel. Another object is to eliminate the danger of backfire into thecarburetor and yet another purpose is to reduce deterioration oflubricating oil due to non-vaporized fuel particles getting into thecrank case.

The use of screens of varied shapes has been suggested for the purposeof accomplishing the afore-mentioned objects and also conical screensboth singularly and in plurality have been suggested with a view todirecting the fuel screens away from the walls of the pipe where theliquid particles seem prone to collect. In spite of previous attempts touse a plurality of foraminous cones the efforts to more completely keepliquid particles from the pipe walls and to more completely mix andvaporize the fuel have not been successful. Realizing the likelihood ofliquid particles collecting` on the walls of the fuel pipe, it has beensuggested to jacket portions of this pipe with hot exhaust gases and sovaporize any particles of liquid fuel on these Walls, but such aconstruction does not lend itself readily to standard engineconstruction today.

According to this invention more complete mixing and vaporization of thefuel is accomplished by a series of conical screens which not only tendto break up any liquid particles in the fuel and direct the gas streamaway from the supply pipe walls but in addition these cones areconnected by a screen which is preferably spaced from the pip-e walls sothat liquid particles contained in the fuel which mightothcrwise collecton the pipe walls become thinly spread over this screen and becausesurrounded by a moving gas stream on substantially all sides, they arebroken up, vaporized, and atomized more readily than if exposed to thegas stream on only one side as would be the case were they on the pipewalls.

Fig. l is a side elevation of the intake manifold and carburetor of aninternal combustion engine showing one form of my invention appliedthereto.

Fig. 2 is a longitudinal sectional view showing the preferred form of myinvention in position.

Fig. 3 is a section of another form of cone.

The preferred form oflmy invention is best shown in Fig. 2 and consistsof a foraminous tubular member 13 having a liange 10 adaptableforsecuring it between a joint in the fuel intake pipe situated betweenthe carburetor 8 and the fuel intake manifold 9.

A series of spaced finely meshed wire cones such as 7, 7', are mountedin cascade on the tubular member 13 so that their apices will point inthe direction ofthe fuel flow in the fuel intake pipe. Each of thesecones may be joined at their apices by a rod le which strengthens thedevice and adds to the surface on which the entrained fuel may spreadfilm and evaporate.

A foraminous cylinder connecting` the bases of the cones functions tomechanically support the cones and facilitates atomization and mixing byreason of the liquid particles being thinly spread out and moreintimately in contact with the gas stream than if such liquid particleswere collected on the pipe walls. The wire shown as connecting theapices of the cones serves to mechanically space and reinforcethe cones.

In Fig. 3 is shown a modified form of my invention in which a section 16of the cone l5 is reversed. This form has the advantage of being morecompact and readily accommodates itself to a pipe which has an elbownear the joint engaging the flange of the device.

In the device'of my invention the engine fuel is forced to make a seriesof angular' turns and the entrained liquid is spread over the concs andis rapidly vaporized. The finely meshed wire catches any dust, dirt orother undesirable foreign matter and thus prevents any engine failure ordeterioration due to this cause. The results of the use of my inventionas shown by numerous tests are that there is less dirt, less smoking andvno back firing in the motor and that the motor using my inventionoperates more efiiciently and runs more smoothly than do those of thesame type not using the device of my invention.

In using the terms cones and cylinder it should be understood that Ihave not intended to limit my claims to a construction in which theseterms are used in a mathematical sense, since advantageous results maybe ob tained by the use of screens of this character which are polygonalin cross-section. The screen should, however, be substantially taperedand preferably with an included angle of less than 90". Futhermore thescreen should have an extended surface of suliicient area to allow thepassage of the requisite volume of air and gas. On the other hand thereshould be no perfor-ations or passages through or around the screen ofsufficient area to permit the passage of flame or large particles offoreign matter.

I claim:

1. A fuel mixing device for internal combustion engines lying within thefuel intake pipe between the carburetor and the engine comprising aseries of separated foraininous cone screens whose apices extend in thedirection of the fuel flow and whose bases are secured' to a foraminouscylinder concentric with the intake pipe and means for securing thebaseof said cylinder to said pipe.

2. A fuel mixing device to be placed in the fuel supply pipe between thecarburetor and intake manifold of an internal combustion engine, whichcomprises a series of fine mesh cone screens having their large endsconnected by a foraminous cylinder, means for supporting said screens insaid pipe, and spacing means extending axially through said series ofscreens.

3. A fuel mixing device to be placed in the supply pipe between thecarburetor and intake manifold of an internal combustion engine, whichcomprises a series of spaced screens inclined so that they tend todirect moisture away from the inner surface of the means for supportingsaid screens 1n said pipe, and a foraminous cylinder connecting theouter extremities of said screens and of a diameter less than the insidediameter of said pipe walls.

4. A fuel mixing device to be placed in the supply pipe between thecarburetor and intake manifold of an internal combustion engine, whichcomprises aseries of longitudinally spaced conical screens having atleast a portion of their sides arranged so that moisture is directedaway from the inner surface of the supply pipe, a foraminous cylinderconnecting the outer portions of said screens and of a diameter lessthan the inside diameter of said pipe walls, and a flange support forsaid cylinder adjacent its end nearest the carburetor.

5. A fuel mixing device to be placed in the supply pipe between thecarburetor and' intake manifold of an internal combustion engine, whichcomprises a series of longitudinally spaced conical screens having atleast a Supply Pipe portion of their sides arranged so that moisture isdirected away from the inner surface of the supply pipe, a foraminouscylinder connecting the outer portions of said screens and of a diameterless than the inside diameter of said pipe Walls, a flange support forsaid cylinder adjacent its ends nearest the carburetor, and reinforcingmeans connectingthe apices of said cones.

HENRY M. COGAN.

